Materials designed for passive fire protection, such as putties, caulks, sealants, and devices, have been in commercial use for more than 25 years. These products are used to seal openings in the walls and ceilings of fire-rated spaces to restrict the passage of toxic fumes, smoke, and flames in the event of a fire. Passive fire protection, which is specified in building codes across the U.S., has been shown to be effective in helping to contain fires and reduce property damage, injuries, and loss of life.

This paper will discuss age and compatibility testing of one product used in fire protection of penetration seals and joints. It will also advocate the development of a new standard in ASTM E6.21 subcommittee for environmental exposure and a simple method for aging of penetration fire stop and joint protection materials.